CSEMP assessment of BD154 in biota at Tees Bay
Statistical analysis
Trend assessment
Analysis of variance
| | Df | AIC | AICc | Log lik | Deviance | Chisq | Chi df | Pr(>Chisq) |
| mean | 1 | 75.56 | 79.16 | -34.78 | 69.56 | | | |
| linear | 2 | 60.83 | 68.83 | -26.42 | 52.83 | 16.724 | 1 | <0.0001 |
| smooth (df = 2) | 3 | 60.61 | 77.27 | -25.30 | 50.61 | 2.229 | 1 | 0.1355 |
Change in log concentration
| | Year start | Year end | Fit start | Fit end | Change | Std error | t | Pr(>|t|) |
| overall | 2003 | 2017 | 0.5820 | -2.8552 | -3.437 | 0.471 | -7.295 | 0.0003 |
| last 20 years | 2003 | 2017 | 0.5820 | -2.8552 | -3.437 | 0.471 | -7.295 | 0.0003 |
Status assessment
| | Conc fitted | Conc ref | Log ratio | Std error | t | Pr(>t) |
| BAC | 0.058 | 0.012 | -1.568 | 0.289 | -5.430 | 0.9992 |
| FEQG | 0.058 | 4.000 | 4.241 | 0.289 | 14.692 | <0.0001 |
Raw data with supporting information
Raw data with assessment
Assessment plot
Organo-bromines data
Organo-bromines assessment
Related pages
